Dräger Perseus A500 - Minimum O2 delivery

Principles of operation
268 Instructions for use Perseus A500 SW 2.0n
VC - CMV / AutoFlow
– Volume-controlled
– Pressure-limited
– Time-controlled
– Machine-triggered
– Decelerating inspiratory flow
The mandatory breaths are machine-triggered and
are not triggered by the patient.
VC - SIMV / AutoFlow
– Volume-controlled
– Pressure-limited
– Time-controlled
– Machine-triggered or patient-triggered
– Decelerating inspiratory flow
– Synchronized inspiration
In VC - SIMV / AutoFlow, the patient can breathe
spontaneously at any time, while the number of
mandatory breaths is predefined. When
synchronization is switched on, the breaths are
adapted to the spontaneous breathing efforts of
the patient. If spontaneous breathing effort by the
patient is detected during the inspiratory trigger
window, a patient-triggered breath will be initiated.
VC - SIMV / PS / AutoFlow
This mode is similar to VC - SIMV / AutoFlow,
except that the patient's spontaneous breathing at
the PEEP level during the expiratory phase is
pressure-supported with ∆Psupp when outside the
trigger window.
Minimum O2 delivery
Gas mixer
Minimum FG-O
2 concentration
Minimum O
2 flow
Carrier gas Air Carrier gas N
2O
Electronically
controlled
21 % 25 %
Configurable for each patient category, see
chapter "Vertical tab "Fresh gas" (only with elec-
tronically controlled gas mixer)"
When the minimum O2 delivery switches on, the
FG O
2 therapy control is selected in addition to
the selected therapy control. When the active
set value is changed, FG O2 changes automati-
cally with it.
Mechanically
controlled
21 % 21 %
Continuously adjustable with flow control valves.
The minimum O
2 delivery interrupts the N2O
flow in the following cases:
–N
2O flow control valve open and O2 flow
control valve closed
– O
2 flow less than 200 mL/min
O
2 will continue to be delivered in the event of
an N
2O failure.